Me estoy volviendo loco !! Situacion altavoces traseros

HOME THEATER: Plasma LG 60PX950+Darbee DVP-5000, HTPC, Receptor ONKYO TX-NR5007.
ESTEREO: Previo CYRUS Pre XPd Qx, Etapas CYRUS X-POWER (x3), Fiio X3II.
ALTAVOCES: Pulsar Audio M-22, Premium XC, KEF 2005.2, Pure Acoustics Bp55, JBL ES250PW(x2),Magnat 301A.
Filtro ISOL-8 MiniSub 2,Isotek Systems Mira,cables HDMI Wireworld Chroma 6,MIT AVT1 Biwire,Chord Carnival Silver Screen,ATLAS Equator MK II,ATLAS Equator Superior 2,MIT AVT1,Red de Furutech.